| INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS POLITICAL ACTION COMMITTEE | $84K | 26 | 2010, 2002, 1996, 2006, 1998, 2004, 2012, 2008, 2000 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $83K | 49 | 2010, 2002, 1996, 2006, 1998, 2004, 2012, 2008, 2000 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $73K | 39 | 2010, 2002, 1996, 2006, 1998, 2004, 2012, 2008, 2000 |
| UAW - V - CAP (UAW VOLUNTARY COMMUNITY ACTION PROGRAM) 'INT'L UNION UNITED AUTOMOBILE AEROSPACE & AGRICULTURAL IMPLEMENT WORKERS OF AMERICA UAW | $71K | 46 | 2010, 2002, 1996, 2006, 1998, 2004, 2012, 2008, 2000 |
| D.R.I.V.E. - DEMOCRAT, REPUBLICAN, INDEPENDENT VOTER EDUCATION (THE PAC OF THE INTERNATIONAL BROTHERHOOD OF TEAMSTERS) | $70K | 19 | 2010, 2002, 1996, 2006, 1998, 2004, 2008, 2000 |
| LABORERS' INTERNATIONAL UNION OF NORTH AMERICA (LIUNA) PAC | $69K | 30 | 2010, 2002, 1996, 2006, 1998, 2004, 2012, 2008, 2000 |
| OFFICE AND PROFESSIONAL EMPLOYEES INTERNATIONAL UNION (OPEIU) JB MOSS VOICE OF THE ELECTORATE (VOTE) | $67K | 24 | 2010, 2002, 1996, 2006, 1998, 2004, 2012, 2008, 2000 |
| MACHINISTS NON PARTISAN POLITICAL LEAGUE OF THE INTERNATIONAL ASSOCIATION OF MACHINISTS & AEROSPACE WORKERS | $67K | 26 | 2010, 2002, 1996, 2006, 1998, 2004, 2008, 2000 |
| UNITED FOOD AND COMMERCIAL WORKERS INTERNATIONAL UNION ACTIVE BALLOT CLUB | $64K | 30 | 2010, 2002, 1996, 2006, 1998, 2004, 2012, 2008, 2000 |
| BUILD POLITICAL ACTION COMMITTEE OF THE NATIONAL ASSOCIATION OF HOME BUILDERS (BUILDPAC) | $59K | 24 | 2010, 2002, 2006, 1998, 2004, 2012, 2008, 2000 |